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Polyaniline/palygorskite nano composite material and preparation method thereof

A nano-composite material and attapulgite technology are applied in the field of functional nano-composite materials to achieve the effects of good electrochemical performance and chemical stability

Inactive Publication Date: 2008-06-04
LANZHOU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The structure of the minerals results in zeolite-like channel widths of approximately 3.7 × 6.0 and 5.6 × 11.0, respectively Due to its structural morphology, it has received considerable attention as an adsorption of organic matter on clay surfaces, but there are few reports on its application in nanocomposites

Method used

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preparation example Construction

[0010] The invention is a polyaniline / attapulgite nanocomposite material and a preparation method thereof. The size of the attapulgite powder is between 40-400nm, and its weight percentage is 5-30%. The steps of its preparation method are:

[0011] (1) Attapulgite powder with a purity of more than 85% is added with anionic surfactant and water and stirred evenly at high speed to make a suspension with a concentration of 5-20%;

[0012] (2) Add the aniline salt acidified by protonic acid in the above suspension, the weight ratio of the amount of aniline added to the amount of attapulgite is 20:1~4:1, the concentration of protonic acid is 0.5~2.5mol / L, mix 30 minutes to 3 hours, add 0.05% to 1% of the amount of aniline oxidation initiator, at a temperature of 5 to 20 ° C, high-speed stirring in-situ polymerization for 2 to 10 hours, stand still after the reaction, filter, and wash with water for 2 to 10 hours 4 times and vacuum-dried to obtain a dark green powder.

[0013] The...

Embodiment 1

[0016] Stir the attapulgite powder with anionic surfactant dodecylbenzenesulfonic acid and water at high speed for 1 hour to make a suspension with a concentration of 5%; add aniline salt acidified by protonic acid to it, and the amount of aniline The weight ratio with the amount of attapulgite is 20: 1, and the protonic acid concentration is 2.5mol / L, mixes 3 hours; Add the oxidized initiator ammonium persulfate of 1% of the aniline amount to initiate in-situ polymerization reaction, at 20 Under the temperature of ℃, high-speed stirring and polymerization for 10 hours; after the reaction, stand still, filter, wash with water 2 to 4 times, and dry in vacuum to obtain dark green powder.

Embodiment 2

[0018] Stir the attapulgite powder with anionic surfactant dodecylbenzenesulfonic acid and water at high speed for 2 hours to make a suspension with a concentration of 10%; add aniline salt acidified by proton acid to it, and the amount of aniline The weight ratio with the amount of attapulgite is 10: 1, and the protonic acid concentration is 2.0mol / L, mixes 2 hours; Add the oxidized initiator ammonium persulfate of 0.5% of the amount of aniline to initiate in-situ polymerization reaction, at 15 Under the temperature of ℃, high-speed stirring and polymerization for 10 hours; after the reaction, stand still, filter, wash with water 2 to 4 times, and dry in vacuum to obtain dark green powder.

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Abstract

The invention relates to a polyaniline / attapulgite nanometer composite material and a preparation method thereof. The dimension of attapulgite powder body is between 40 nm to 400 nm, and the weight percentage thereof is 5-30 percent. The steps of the preparation method are that: the attapulgite powder body with above 85 percent of purity is firstly added with anionic surfactant and water and then quickly and well stirred to form suspension with 5-20 percent of concentration; the suspension is added with aniline salt that is acidified by protonicacid; the weight proportion of the aniline salt added and the attapulgite powder body is 20:1-4:1, and the concentration of the protonicacid is 0.5-2.5 mol / L; the suspension with aniline salt is mixed for 30 min-3 h, then added with oxidized initiator with the amount equal to 0.05-1 percent of the added aniline salt then stirred quickly to in-situ polymerize for 2-10 hours under the temperature of 5-20 DEG C, finally, kept after reaction and filtrated, washed with water for 2-4 times and vacuum dried, thus obtaining deep green power.

Description

technical field [0001] The invention is a preparation method of a novel organic-inorganic conductive nano-composite material, which belongs to the field of functional nano-composite materials. Background technique [0002] Polyaniline (PANI) has high electrical conductivity, cheap raw materials, stable performance, simple synthesis method, clear doping mechanism and controllable doping degree, so it has become the most promising structural conductive polymer material for industrial applications. one. However, due to the rigidity of the molecular chain and the polar interaction between the chains, the solubility is extremely low, and it is almost insoluble in any organic solvent, which brings difficulties to the film formation and processing of doped polyaniline, which seriously hinders its application in various fields. large-scale application. Therefore, how to improve the processing performance of polyaniline is the key to promote the practical application of polyaniline...

Claims

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Application Information

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IPC IPC(8): C08L79/02C08K9/04C08G73/02C08K3/34
Inventor 冯辉霞邱建辉聂福荣邵亮王毅张建强
Owner LANZHOU UNIVERSITY OF TECHNOLOGY
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